3GTEPS の壁

以下の Intel Xeon X5690 3.47GHz x 2 マシン（メモリ192GB)だが、median_TEPS で 3G を超えていない。他のサーバでも 3G を超えることは出来ていない。ちなみに１ノードで 3G を超えているのは Intel Xeon Westmere-EX 2.4GHz x 4 マシンと Xeon Sandybridge-EP 2.9GHz x 2 マシンのみとなっている。

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Parallel Breadth-First Search for Graph500 Benchmark version 3.44
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CPU name is Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
freq / RAM is 3466.864 MHz / 189.15 GB
#cpu, #nodes, #cores is 24 2 12
COMPILER is GCC (GNU C Compiler) version 4.4.6
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scale, edgefactor is 25 16
energy_loop is disable
#threads, #NUMAs is 24 2
mpol_bind is ON(mmap with mbind(MPOL_BIND))
mem_interleave is OFF
switching parameter is 0.000035 (n ~= 1.174405e+03)
queue buffer size is 65536
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SCALE: 25
nvtx: 33554432
edgefactor: 16
terasize: 8.58993459199999983e-03
A: 5.69999999999999951e-01
B: 1.90000000000000002e-01
C: 1.90000000000000002e-01
D: 5.00000000000000444e-02
generation_time: 2.82982687950134277e+01
construction_time: 2.94177212715148926e+01
nbfs: 64
min_time: 1.57860040664672852e-01
firstquartile_time: 1.71346008777618408e-01
median_time: 1.91974878311157227e-01
thirdquartile_time: 2.08445191383361816e-01
max_time: 2.88492918014526367e-01
mean_time: 1.94484390318393707e-01
stddev_time: 3.09511709459013712e-02
min_nedge: 5.36865498000000000e+08
firstquartile_nedge: 5.36865498000000000e+08
median_nedge: 5.36865498000000000e+08
thirdquartile_nedge: 5.36865498000000000e+08
max_nedge: 5.36865498000000000e+08
mean_nedge: 5.36865498000000000e+08
stddev_nedge: 0.00000000000000000e+00
min_TEPS: 1.86093128973435473e+09
firstquartile_TEPS: 2.59243812652744484e+09
median_TEPS: 2.80723269125115538e+09
thirdquartile_TEPS: 3.15244983066783619e+09
max_TEPS: 3.40089547512794924e+09
harmonic_mean_TEPS: 2.76045546442615938e+09
harmonic_stddev_TEPS: 5.53481111342410892e+07